CN215525436U

CN215525436U - Lithium battery pole piece dust testing device

Info

Publication number: CN215525436U
Application number: CN202120760191.7U
Authority: CN
Inventors: 陈利权; 孙志强; 李倩伟; 刘金成
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2022-01-14
Anticipated expiration: 2031-04-14

Abstract

The utility model discloses a lithium battery pole piece dust testing device, wherein a box body is provided with an accommodating cavity, a pole piece fixing device is rotatably arranged in the accommodating cavity and used for fixing a pole piece, an air supply port of an air supply device is communicated with the accommodating cavity, the pole piece is positioned right in front of the air supply port, a detection interface of a laser particle size analyzer is communicated with the accommodating cavity and used for detecting the dust content dissociating in the accommodating cavity, a viscous dust collecting pad is arranged at the bottom of the accommodating cavity, and the pole piece is arranged between the air supply device and the viscous dust collecting pad. This lithium battery pole piece dust testing arrangement simple structure, convenient operation can make the aassessment labour saving and time saving to the dust content on the pole piece.

Description

Lithium battery pole piece dust testing device

Technical Field

The utility model relates to the technical field of batteries, in particular to a lithium battery pole piece dust testing device.

Background

A lot of dust can be produced in the production process of the lithium battery pole piece, particularly in the die cutting process and the slitting process, and after the dust enters the battery, risks of piercing a diaphragm, causing internal micro short circuit of the battery and further causing thermal runaway and the like can be caused. Therefore, whether the free dust particles on the surface of the pole piece are completely treated is a key factor of the quality of the battery. In the existing production process, a collection box is usually placed below a pole piece to collect dust falling from the pole piece, after continuous production is carried out for a period of time (>8 hours), the dust in the collection box is weighed, and the dust content on the pole piece is estimated according to the weight, however, the method is time-consuming, labor-consuming and high in error rate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lithium battery pole piece dust testing device to solve the problems that the estimation of the content of dust on a pole piece is time-consuming and labor-consuming and has high error rate.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a lithium battery pole piece dust testing arrangement, includes:

a case having a receiving cavity;

the pole piece fixing device is rotatably arranged in the accommodating cavity and used for fixing a pole piece;

the air supply device is provided with an air supply port communicated with the accommodating cavity, and the pole piece is positioned right in front of the air supply port;

the detection interface of the laser particle analyzer is communicated with the accommodating cavity, and the laser particle analyzer is used for detecting the content of dust dissociating in the accommodating cavity;

sticky dust collection pad, sticky dust collection pad set up in hold the bottom in chamber, the pole piece set up in air feeder with between the sticky dust collection pad.

Preferably, the pole piece fixing device comprises an upper fixing piece and a lower fixing piece, the upper fixing piece is rotatably arranged on the top wall of the accommodating cavity, the lower fixing piece is rotatably arranged on the bottom wall of the accommodating cavity, the upper fixing piece and the lower fixing piece are oppositely arranged, and the upper fixing piece and the lower fixing piece are respectively used for fixing the upper end and the lower end of the pole piece.

Preferably, the upper fixing piece is provided with a first groove, the lower fixing piece is provided with a second groove, and the upper end and the lower end of the pole piece are respectively inserted into the first groove and the second groove.

Preferably, the pole piece fixing device further comprises a first handle, the first handle is fixedly connected with the upper fixing piece, and the first handle is rotatably arranged in the through hole in the box body in a penetrating mode and located outside the box body.

Preferably, the dust collecting device further comprises a storage box, the storage box is arranged at the bottom of the storage cavity, and the adhesive dust collecting pad is arranged in the storage box.

Preferably, the box body is provided with an opening communicated with the accommodating cavity, and the accommodating box is inserted into the opening.

Preferably, the storage box is provided with a second handle located outside the box body.

Preferably, the box body is provided with a laser particle analyzer interface, and the laser particle analyzer interface is used for being connected with a detection interface of the laser particle analyzer.

Preferably, the air supply device is provided with a valve for controlling the opening degree of the air supply port.

The utility model has the beneficial effects that: the utility model provides a lithium battery pole piece dust testing device, wherein a box body is provided with an accommodating cavity, a pole piece fixing device is rotatably arranged in the accommodating cavity and used for fixing a pole piece, an air supply port of an air supply device is communicated with the accommodating cavity, the pole piece is positioned right in front of the air supply port, a detection interface of a laser particle analyzer is communicated with the accommodating cavity and used for detecting the dust content dissociating in the accommodating cavity, a viscous dust collecting pad is arranged at the bottom of the accommodating cavity, and the pole piece is arranged between the air supply device and the viscous dust collecting pad. Choose for use and hold clean and dustless box of intracavity, air feeder passes through the air feed inlet and inputs gas to holding the intracavity, the pole piece passes through pole piece fixing device and sets up in the dead ahead of air feed inlet, the air feeder input holds the gas in chamber and blows up the dust on the pole piece, some dust can dissociate in holding the intracavity, another part can adhere to on the viscidity collection dirt pad that holds the bottom in chamber, laser particle size analyzer can detect and dissociate in the dust content who holds the chamber, follow-up can measure the dust content on the viscidity collection dirt pad through taking a picture, later according to the detection data of laser particle size analyzer and the measured data who takes a picture, this picture a picture of.

Drawings

Fig. 1 is a schematic structural diagram of a lithium battery pole piece dust testing apparatus according to an embodiment of the present invention.

In the figure:

1. a box body; 11. an opening; 12. a laser particle sizer interface;

21. an upper fixing member; 22. a lower fixing member; 23. a first handle; 211. a first groove; 221. a second groove;

3. a gas supply device;

4. a laser particle size analyzer;

5. a storage box; 51. a second handle;

6. and (6) pole pieces.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a lithium battery pole piece dust testing device which is simple in structure and convenient to operate and can evaluate the dust content on a pole piece in a time-saving and labor-saving manner.

As shown in fig. 1, this lithium battery pole piece dust testing device includes box 1, pole piece fixing device, air feeder 3, laser particle analyzer 4 and viscidity collection dirt pad, wherein, box 1 has the chamber of holding, pole piece fixing device rotates and sets up in holding the intracavity, pole piece fixing device is used for fixed pole piece 6, air feeder's 3 air supply mouth with hold the chamber intercommunication, pole piece 6 is located the dead ahead of air supply mouth, laser particle analyzer 4's detection interface with hold the chamber intercommunication, laser particle analyzer 4 is used for detecting the dust content who dissociates in holding the chamber, viscidity collection dirt pad sets up in the bottom that holds the chamber, pole piece 6 sets up between air feeder 3 and viscidity collection dirt pad. Choose for use and hold clean and dustless box 1 in the intracavity, air feeder 3 is gaseous to holding intracavity input through the air supply port, pole piece 6 sets up in the dead ahead of air supply port through pole piece fixing device, air feeder 3 inputs the gas that holds the chamber and blows the dust on pole piece 6, some dust can dissociate in holding the intracavity, another part can adhere to on the viscidity collection dirt pad that holds the bottom in chamber, laser particle size apparatus 4 can detect the dust content dissociating in holding the chamber, follow-up can measure the dust content on the viscidity collection pad through taking a picture microscopically again, later evaluate the dust content on pole piece 6 according to the measured data of laser particle size apparatus 4 and the measured data of taking a picture microscopically, this lithium battery pole piece dust testing arrangement simple structure, and convenient operation, can make the dust content on the pole piece 6 aassessment labour saving and time saving.

Preferably, the pole piece fixing device comprises an upper fixing piece 21 and a lower fixing piece 22, the upper fixing piece 21 is rotatably arranged on the top wall of the accommodating cavity, the lower fixing piece 22 is rotatably arranged on the bottom wall of the accommodating cavity, the upper fixing piece 21 and the lower fixing piece 22 are oppositely arranged, and the upper fixing piece 21 and the lower fixing piece 22 are respectively used for fixing the upper end and the lower end of the pole piece 6. After being connected upper end and lower extreme with pole piece 6 with last mounting 21 and lower mounting 22 respectively, go up mounting 21 and rotate and can drive pole piece and lower mounting 22 and rotate, when the air current that holds the chamber at air feeder 3 input blows the pole piece, rotate and go up mounting 21 and drive pole piece 6 and rotate, make the air current can blow every face to pole piece 6, can make whole dust on the pole piece 6 break away from the pole piece, guarantee to the more comprehensive accuracy of aassessment of dust content on the pole piece 6.

Preferably, the upper fixing member 21 is provided with a first groove 211, the lower fixing member 22 is provided with a second groove 221, and the upper end and the lower end of the pole piece 6 are respectively inserted into the first groove 211 and the second groove 221. The upper end and the lower end of the pole piece 6 are respectively inserted into the first groove 211 and the second groove 221, so that the pole piece 6 is fixed on the pole piece fixing device, the pole piece 6 is convenient to mount and dismount, and the pole piece 6 cannot be damaged.

Preferably, the pole piece fixing device further comprises a first handle 23, the first handle 23 is fixedly connected with the upper fixing piece 21, and the first handle 23 is rotatably arranged in a through hole in the box body 1 in a penetrating manner and is located outside the box body 1. The upper fixing member 21 can be more conveniently rotated by the first handle 23 to rotate the pole piece 6.

Preferably, still include receiver 5, receiver 5 sets up in holding the chamber bottom, and the viscidity dust collection pad sets up in receiver 5. Place viscidity collection dirt pad in receiver 5, make things convenient for getting of viscidity collection dirt pad to put, receiver 5 can support viscidity collection dirt pad, prevents to take away carelessly when having the viscidity collection dirt pad of dust and spill the dust that falls, and the aassessment of dust content causes the error on 6 extremely pieces.

Preferably, the box body 1 is provided with an opening 11 communicated with the accommodating cavity, and the accommodating box 5 is inserted into the opening 11. The storage box 5 is placed in the containing cavity or taken away from the containing cavity through the opening 11, and the storage box is simple in structure and convenient to operate.

Preferably, the storage box 5 is provided with a second handle 51, and the second handle 51 is located outside the box body 1. The second handle 51 can facilitate holding of the storage box 5.

Preferably, the box 1 is provided with a laser particle analyzer interface 12, and the laser particle analyzer interface 12 is used for connecting with a detection interface of the laser particle analyzer 4. The detection interface of the laser particle analyzer 4 is communicated with the accommodating cavity through the laser particle analyzer interface 12.

Preferably, the gas supply device 3 is provided with a valve for controlling the opening degree of the gas supply port. The flow of the gas supplied into the accommodating chamber by the gas supply device 3 can be appropriately adjusted by a valve.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a lithium battery pole piece dust testing arrangement which characterized in that includes:

the box body (1), the box body (1) is provided with a containing cavity;

the pole piece fixing device is rotatably arranged in the accommodating cavity and is used for fixing a pole piece (6);

the air supply device (3), the air supply port of the air supply device (3) is communicated with the accommodating cavity, and the pole piece (6) is positioned right in front of the air supply port;

the detection interface of the laser particle analyzer (4) is communicated with the containing cavity, and the laser particle analyzer (4) is used for detecting the content of dust dissociating in the containing cavity;

sticky dust collection pad, sticky dust collection pad set up in hold the bottom in chamber, pole piece (6) set up in air feeder (3) with between the sticky dust collection pad.

2. The lithium battery pole piece dust testing device of claim 1, wherein the pole piece fixing device comprises an upper fixing piece (21) and a lower fixing piece (22), the upper fixing piece (21) is rotatably arranged on the top wall of the accommodating cavity, the lower fixing piece (22) is rotatably arranged on the bottom wall of the accommodating cavity, the upper fixing piece (21) and the lower fixing piece (22) are oppositely arranged, and the upper fixing piece (21) and the lower fixing piece (22) are respectively used for fixing the upper end and the lower end of the pole piece (6).

3. The dust testing device for the lithium battery pole piece is characterized in that the upper fixing piece (21) is provided with a first groove (211), the lower fixing piece (22) is provided with a second groove (221), and the upper end and the lower end of the pole piece (6) are respectively inserted into the first groove (211) and the second groove (221).

4. The lithium battery pole piece dust testing device of claim 2, wherein the pole piece fixing device further comprises a first handle (23), the first handle (23) is fixedly connected with the upper fixing part (21), and the first handle (23) is rotatably arranged in a through hole in the box body (1) in a penetrating manner and is located outside the box body (1).

5. The lithium battery pole piece dust testing device of claim 1, further comprising a storage box (5), wherein the storage box (5) is arranged at the bottom of the containing cavity, and the adhesive dust collecting pad is arranged in the storage box (5).

6. The lithium battery pole piece dust testing device of claim 5, wherein the box body (1) is provided with an opening (11) communicated with the containing cavity, and the containing box (5) is inserted into the opening (11).

7. The lithium battery pole piece dust testing device of claim 5, wherein the storage box (5) is provided with a second handle (51), and the second handle (51) is positioned outside the box body (1).

8. The lithium battery pole piece dust testing device of any one of claims 1 to 7, wherein the box body (1) is provided with a laser particle size analyzer interface (12), and the laser particle size analyzer interface (12) is used for being connected with a detection interface of the laser particle size analyzer (4).

9. The lithium battery pole piece dust testing device of any one of claims 1 to 7, wherein the air supply device (3) is provided with a valve, and the valve is used for controlling the opening degree of the air supply port.